Finding the Fourth Proportional to 378.95, 568.53 and 135.65
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Solution
The fourth proportional to 378.95, 568.53 and 135.65 is: 203.51
Step by Step Solution
- Step 1: Write the proportion equation
378.95 : 568.53 = 135.65 : x - Step 2: Convert to fraction form
378.95/568.53 = 135.65/x - Step 3: Cross multiply
378.95x = 568.53 × 135.65 - Step 4: Simplify right side
378.95x = 77,118.25 - Step 5: Solve for x
x = 77,118.25/378.95 - Step 6: Final answer
x = 203.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.